APPLICATION OF VLASOV THEORY AND MULTI- VARIABLE  POWER SERIES FOR ELASTIC STABILITY  ANALYSIS OF MONO -SYMMETRIC BOX GIRDER. NIJOTECH [Internet]. 2025 Jul. 7 [cited 2026 Apr. 19];44(2):173 – 183 . Available from: https://nijotech.com/index.php/nijotech/article/view/4333